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(No Model.) 2 Sheets-Sheet 1A C. E. SAEEORD.

STEAM GENERATOR.

PatentedDeo. '23, 1884.

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STE/Kiltllhl RATOR.

SPECEFICATIGN forming part of Letters Patent No. 309,651, dated December23, 1884.

Application filed April 19, 1884. (No model.)

To all whom, t may concern,.-

Be it known that I, @Lannion E. Samoan, of Lancaster, in the county ofFnie and State of N ew York, have invented a new and useful Improvement.in Steam-Generators, ot' which the following is a specification.

rilhis invention relates to an improvement in that class ot'steam-generators which are composed, of a series ot' similar castsections suitably connected at their upper and lower ends to establishcommunication between the steam and water spaces ot' the respectiveseotions.

The object of my invention is to lconstruct the sections of the boileror steamgenerator in such manner that the heat generated by the burningfuel is thoroughly utilized, and so that the generator shall be simplein construction and 'capable of being easily cleaned when required.

My invention consists ol" the improvements in the construction ot' theboiler which will be hereinafter fully set forth, and pointed out in theclaims.

ln the accompanying drawings, consisting of two sheets, Figure l is anend elevation ot the steam-generator with a portion of theinclosing-casing broken away. Fig. f is alongitudinal section of thegenerator. Fig. 3 is a horizontal section in line .t x, Fig. l. Fig. elis a horizontal section in line y y, Fig. 2. Fig.

5 is a vertical cross-section in line z, Fig. 2. Fig. (i is a verticallongitudinal section inline w to, Fig. il. Fig. 7 is a horizontalsection, on an enlarged scale, of the pipe-connections at the upper endsof the sections. Fig. 8 is a horizontal section, on an enlarged scale,olrl the cleaning-tubes. Fig. 9 is a perspective view of one of thesections.

Lilie letters of reference refer to like parts in the several ngures.

A represents the brick-work or other casing inclosing thesteam-generator, and A the grate arranged in the lower portion thereofabove the ash-pit A2.

ct represents the rire-door; a', the ash-pit door, and a2 and ai linesleading, respectively, from the upper and lower portions of the casing Ato the chimney.

B represents the upright sections of the gencrater, arrangedtransversely in two rows on opposite sides oit' the grate between thefront section, C, and the rear section, D, the two latter sectionsextending entirely across the generator, as represented in Fig. 4t.

Each oi' the sections B consists of a hollow body, overhanging thegrate, and a leg or down wardly-extending portion, B2, resting on themasonry or other support on one side of the grate. The lops of theseveral sections B lit closely against each other when the sections arein place, so as to form a tight top. The inner faces, t', and the sidesIfl ol' the sections recede from the edges of the top b, formingllame-spaces c between the inner faces,l b', and llame-spaces c betweenthe sides b. rlhe inner faces, b', and sides Zr connect with the top byeasy curves, as shown.

j' are upright hollow extensions or enlarge` ments formed on the sides bof the body portions LB ot the sections, and communicating witlrthehollow interior space of the same.

j" are upright elongated flame-passages extending through the bodies Bof the sections on the outer sides of the enlargements f.

ft are similar hollow enlargements formed along the inner edges of thelegs B2, and eX- tending upwardly along the body portions B. Theenlargements f are made so large that their faces rest against eachother when the sections are in place, while the enlargements f aresmaller, leaving Haine-spaces f3 between their faces, as represented inFig. 4. The enlargerncntsfj"2 do not extend to the top b of the section,but leave namespaces ft between their upper ends and the top.

g represents similar upright hollow enlargements formed along the outer.edges of each section, extending from the top downwardly, andterminating above the lower ends of the legs i', so as to leave passagesg below the lower ends or' the enlargements.

7L represents upright llame-passages lormed the enlargements f2 and g.

I represents a space or passage formed between the sides and rear wallsof the casing A and the generator, and communicating with the chimney bythe tlucs at a3.

J represents a laterally-projecting hollow lug or ear formed on theupper portion of each section 5 and j represents short pipes, wherebythe lugs J ot' two adjoining sections are connected. The pipes j areeach provided with through the body B of each section between lOOscrew-threads at opposite ends, and screwed intocorrespondingly-threaded openings in the lugs J, and secured by jam-nutsj', as represented in Fig. 7. The pipes j establish communicationbetween the steam-spaces of the several sections. Similar pipes, k, areVemployed for establishing communication between the water-spaces at thelower ends of the several sections.

L represents an opening formed in the lower portion of the frontsection, C, in line with the lire-door @,fo'r giving access to thegrate. The front and rear sections, C and D, are provided on their innersides with hollow enlargements I5 fj .f/,Corresponding with theenlargements of the section B.

m are semicircular recesses formed in the faces ofthe outerenlargements, g, of the several sections near their upper ends and abovethe upper ends of the enlargements ffg.

a are tubes resting with their inner ends in the adjoining recesses m oftwo sections, and extending outwardly through openings in the casing A,their outer ends being closed by removable caps or covers n', asrepresented in Figs. 3 and 8.

rIhe enlargements f f2 g and the passages f h divide the interior spaceof each section, so as to present their bodies of water to the acf tionof the flame and hot gases, thereby increasing the heating-surface andenabling the apparatus to generate steam quickly and economically.

The enlargements f2 forni the outer walls of the combustion chamber inwhich the flame and hot gases rise from the fuel on the grate to the topof the generator.

The spaces between the enlargements f2 and g form diving or return iues,by which the hot gases descend from the top of the generator to thelower openings, g', through which the gases escape into the passage I,surrounding the sides and rear end of the generator.

Vhen it is desired to clear the sections from ashes, 85e., which mayadhere to the same, the caps n are removed and steam-jets are introducedthrough the tubes n, which jets can be readily directed against theinnermost porenlargements j, and passages g below the enlargements g,and intermediate llame passages, f h, extending through the sections,substantially as set forth.

2. In a steam-generator, a section, B, composed of an overhang-ing body,B', downwardly-extending leg B2, upright enlargements ff2 g, andintermediate dame-passages,

f h, substantially as set forth. l

3. The combination, with the intermediate sections, B, provided withupright enlargements f2 g, front and rear sections, C and D, constructedon their inner sides with similar enlargements, f2 g, hollow lugs J,formed on the several sections, and connecting -pipes j and 7c.,substantially as set forth.

4. The combination, with the sections B, having their tops b constructedto rest closely against each other, and having receding inner faces, b',and sides b2, forming flame-passages, of the projecting enlargements f2g, formed on the sides of the sections, front and rear sections, C andD, and an inclosing-case, A, substantially as set forth.

5. In a steam-generator, a section, B, provided along its outer edgewith an enlargement, g, having a recess, m, near its upper end,substantially as set forth.

6. The combination, with the casing A and the sections B, havingenlargements g, provided with recesses m, of the tubes n, extending fromsaid recesses outwardly through the casing, and provided with removablecovers, substantially as set forth.

W'itness my hand this 14th day of April, 1884-.

OLARANCE E. SAFFGRD.

Vitnesses: v

JNO. J. BONNER, Gno. E. PITMAN.

